lsa blower swap?
11-25-2015, 08:29 AM
#141
Can anyone confirm the length of injectors that fit? I am trying to find out if they are the longer or shorter style. I want to buy some aftermarket SD. I think I am going to get 80# injectors. I figure they will be a bit big for for a stock setup, but I plan on a cam, ported heads and blower if I go this route, otherwise, I will have a TC78 Turbonetics and 12#'s.
I have an LS2 (with LS3 heads) in an 86 Monte SS & want to put the Cadillac supercharger on it. I actually already have it. But I mounted the engine 1" back and don't want to redo that, I have the Holley AC compressor mounting it up high on the passenger side because I dont have room down low. I have debated this setup from LSXConcepts. Others have said there isn't enough belt wrap on the supercharger pulley. I will have to change AC bracket, they say their stuff wont work with the Holly bracket. Here is what their setup looks like:
samckitt, Thanks for posting up that option. According to what their website says, it can be used with the Corvette fead, just need the LSA waterpump and lower crank pulley. I, like probably everyone here, and trying to piece together a full working setup.
Not changing fuel pressure is more of a variable. The reason why pressure is raised 1:1 is to counteract the boost trying to push the fuel backwards down the injector's throat. Flow shouldn't actually change as the pressure goes up with boost, it's reduced at idle because the intake vacuum attempts to suck the fuel out of the injector....
11-25-2015, 02:54 PM
#142
That was my point exactly, the comment was made about tuners desiring to NOT have pressure vary which IS what you get with a vac/boost referenced regulator. However, the injector flow remains steady with the varied flow because it's counteracting the vac/boost going on with the engine. A tuner that says they don't like that seems odd which is why I mentioned it. Having steady reliable fuel flow and more importantly injector flow is desired. I've had to tune cars where fuel flow varied, it's a nightmare! Boost reference it for sure IMO. Returnless systems are another kettle, not played with those.
11-25-2015, 06:12 PM
#144
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Mine is drive by cable. I deleted the egr solenoid and made a bracket to run the cable around the passenger side of the blower. I'm using an edelbrock 90mm tb and the throttle cam clears the blower pulley by about 0.125" at full throttle. I also had to space the lsa power steering tank up 1.0" to clear the tps and iac.
11-25-2015, 06:20 PM
#145
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Mine is drive by cable. I deleted the egr solenoid and made a bracket to run the cable around the passenger side of the blower. I'm using an edelbrock 90mm tb and the throttle cam clears the blower pulley by about 0.125" at full throttle. I also had to space the lsa power steering tank up 1.0" to clear the tps and iac.
11-26-2015, 10:15 PM
#147
That was my point exactly, the comment was made about tuners desiring to NOT have pressure vary which IS what you get with a vac/boost referenced regulator. However, the injector flow remains steady with the varied flow because it's counteracting the vac/boost going on with the engine. A tuner that says they don't like that seems odd which is why I mentioned it. Having steady reliable fuel flow and more importantly injector flow is desired. I've had to tune cars where fuel flow varied, it's a nightmare! Boost reference it for sure IMO. Returnless systems are another kettle, not played with those.
OK< so I have started collecting parts and have some more questions. I have a CTSV lid. It has 2 MAP sensors on it. What are you guys doing with these? I understand wiring in 1, but the other IDK what to do with. I can't seem to find much info on the CTSV lid, looks like everything has the ZL1 lid as a upgrade, but I probably won't have room to fit that under my hood.
11-27-2015, 08:34 PM
#149
DBC here too. Running FAST 102mm tb, and a Holley throttle cable bracket which sandwiches between throttle body and the snout. Worked out great because I lost the oring groove when snout was ported to clear the 102mm blade, and Holley throttle bracket comes with 2 paper gaskets.
12-02-2015, 01:25 PM
#150
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That was my point exactly, the comment was made about tuners desiring to NOT have pressure vary which IS what you get with a vac/boost referenced regulator. However, the injector flow remains steady with the varied flow because it's counteracting the vac/boost going on with the engine. A tuner that says they don't like that seems odd which is why I mentioned it. Having steady reliable fuel flow and more importantly injector flow is desired. I've had to tune cars where fuel flow varied, it's a nightmare! Boost reference it for sure IMO. Returnless systems are another kettle, not played with those.
Isn't the LSA fuel rail returnless?
12-02-2015, 01:34 PM
#151
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following this pretty intently as I'm going to be doing an LSA swap into my 68 Camaro. As of now I'm leaning towards a Rick's tank with a ZL1 fuel module and a Vaporworx pwm unit. Seems to be the easiest (though admittedly costly) and reliable set up .
12-02-2015, 06:33 PM
#152
I'm not a tuner so I'm not the expert, but the tuner who said boost referenced is an unnecessary complication is pretty qualified. GM engineer, tunes Stielow's 1000 hp blown LS7's etc. The guy that actually tuned it is Dr Phill who is pretty well known in Det area and he had no problem with the setup either. Car runs great. So I'd say both ways can get it done.
Isn't the LSA fuel rail returnless?
Isn't the LSA fuel rail returnless?
Yes LSAs are returnless. Doesnt mean you cant run an AFPR still
12-03-2015, 12:29 AM
#153
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Thanks for the info Pocket and everyone else. I've seen a couple of units on ebay for around 700 which doesn't seem too bad. Anyone know how far from the valley it sits with the camaro top half on it?
I plan to use an lq4 short block, with eBay takeout l92 heads and lsa blower with a camaro top
I plan to use an lq4 short block, with eBay takeout l92 heads and lsa blower with a camaro top
12-05-2015, 11:01 AM
#154
OK. Stupid question. I set my LSA supercharger on LS3 heads today, and it wouldn't sit flat. I tipped it up, and found this hollow pin on the passenger side. I am assuming this is an alignment pin? Should I pull it out, cut it off?
Thanks.
Thanks.
12-05-2015, 11:39 AM
#155
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Sounds crazy, but easiest way is to hammer it. It'll crack and fall apart. I couldn't pull it out or drill it out.
12-05-2015, 05:24 PM
#157
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If you're a perfectionist you can drill/pull it out, but not worth the hassle when it breaks so easy. Just be careful of course to not mar up the surface. I think mine actually started breaking just when I was trying to wiggle it with vise grip. Combo of that and light hammering broke it completely off.
12-06-2015, 09:09 AM
#158
Good info. So it IS a alignment dowel then.
12-06-2015, 09:13 AM
#159
Another question for anyone who has a Zl1 lid available.
How tall is the back of the lid? The shorter part before it curves upward? I have about 2.5 inches clearance at that point, hoping this lid will fit under there.
Thanks.
How tall is the back of the lid? The shorter part before it curves upward? I have about 2.5 inches clearance at that point, hoping this lid will fit under there.
Thanks.
